KR101692773B1

KR101692773B1 - Vane pump

Info

Publication number: KR101692773B1
Application number: KR1020150081447A
Authority: KR
Inventors: 정현의; 김상우
Original assignee: 명화공업주식회사
Priority date: 2015-06-09
Filing date: 2015-06-09
Publication date: 2017-01-05
Also published as: KR20160145251A

Abstract

The present invention can prevent the vane from tilting as well as supporting one side of the vane received in the rotor as well as the other side of the vane closely attached to the inner circumferential surface of the outer cam ring through the supporting ribs, To a vane pump capable of preventing breakage at a source.
The vane pump of the present invention for this purpose is a vane pump configured such that a working fluid introduced into one side of a rotary chamber formed between an outer cam ring and a rotor is discharged to the other side of the rotary chamber, A suction port for introducing a working fluid into the rotary chamber when the rotor rotates; And a discharge port communicating with the other side of the rotary chamber and discharging a working fluid of the rotary chamber when the rotor rotates, wherein at least one port of the suction port and the discharge port is connected to the outer side, A support rib is formed at the end of the port corresponding to the outer side with respect to the center of the cam ring to support the side surface of the vane.

Description

Vane pump {VANE PUMP}

The present invention relates to a vane pump, and more particularly, to a vane pump that supports the other side of a vane, which is in contact with not only one side of a vane accommodated in a rotor but also an inner circumferential surface of an outer cam ring, through a supporting rib, The present invention relates to a vane pump capable of preventing damage to a casing and a cover from occurring.

The pump serves to supply a working fluid to each part of the engine for smooth operation of the engine. The pump applies pressure to the working fluid by using the mechanical energy of a prime mover such as an electric motor, an internal combustion engine or a steam turbine, And is divided into a gear type, a vane type, and a piston type according to the structure.

On the other hand, there is a constant capacity pump in which the discharge amount of the pump is always constant depending on the load variation, and a variable displacement pump in which the discharge amount is changed in accordance with the variation of the load.

As shown in Figs. 1 to 3, the variable vane pump, which is a vane type and whose amount of discharge varies according to the variation of the load, includes a casing 10 constituted by a housing 11 and a cover 12, An outer cam ring 20 which is eccentrically installed with the rotor 30 and an outer cam ring 20 which elastically supports the outer cam ring 20 and the rotor 30, And a plurality of vanes 31 rotating in contact with the inner circumferential surface of the outer cam ring 20 to press-feed the working fluid to the outside.

FIG. 4 is a cross-sectional view of a conventional variable capacity vane-type pump, in which a rotor 30 constituting the vane-type pump is provided with a plurality of vanes 31 for accommodating the vanes such that the vanes 31 can slide in the radial direction. The slot 30s is formed.

4, the vane 31 is inserted into the slot 30s of the rotor 30 and both sides of the vane 31 are connected to the housing 11 constituting the casing 10, And is inserted into or discharged from the slot 30s while being rotated by the rotation of the rotor 30 in a state of being closely contacted between the covers 12, respectively.

However, in the conventional variable capacity vane type pump A, when the vane 31 is maximally discharged from the slot 30s and is in contact with the inner circumferential surface of the outer cam ring 20, the housing 11 and the cover 12 is weakened and the side of the vane 31 in contact with the inner circumferential surface of the outer cam ring 20 tilts into the space of the suction port 40 and the discharge port 50 while the casing 11 And the cover 12 are damaged.

Registration No. 10-1382073 (registered on March 31, 2014)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems in the prior art, and it is an object of the present invention to provide a rotor having a vane, The present invention provides a vane pump capable of preventing damage to the casing and the cover from occurring.

According to an aspect of the present invention, there is provided a vane pump comprising: a rotary chamber having a first end and a second end; A suction port communicating with the side portion and introducing a working fluid into the rotary chamber when the rotor rotates; And a discharge port communicating with the other side of the rotary chamber and discharging a working fluid of the rotary chamber when the rotor rotates, wherein at least one port of the suction port and the discharge port is connected to the outer side, A support rib is formed at the end of the port corresponding to the outer side with respect to the center of the cam ring to support the side surface of the vane.

Preferably, the support rib may be formed in a section where the side surface area of the vane corresponding to the suction port and the discharge port is 50% or more of the entire lateral surface area of the vane.

Preferably, the inclined portion for fluid flow may be formed on a portion of the support rib close to the side of the close contact surface which is in close contact with the side surface of the vane.

The present invention as described above can prevent the vane from tilting as well as supporting one side of the vane received in the rotor as well as the other side of the vane closely attached to the inner circumferential surface of the outer cam ring through the support rib, It is possible to prevent damage to the casing and the cover from occurring.

In addition, there is an advantage that a fluid flow inclined portion can be formed at a portion opposite to the close contact surface of the support rib which is in close contact with the side surface of the vane so that a smooth flow of the working fluid can be achieved.

1 is a perspective view showing a conventional variable capacity vane type pump.
2 is a partially exploded perspective view showing a conventional variable capacity vane type pump.
3 is a plan view showing the inside of a conventional variable capacity vane type pump.
4 is a cross-sectional view showing a partial cross section of a conventional variable capacity vane type pump.
5 is a partially exploded perspective view showing a variable vane pump according to an embodiment of the present invention.
6 is a plan view showing the interior of a variable vane pump according to an embodiment of the present invention.
7 is a cross-sectional view showing a partial cross section of a variable vane pump according to an embodiment of the present invention.
8 is a cross-sectional view showing a partial cross section of a variable vane pump according to another embodiment of the present invention.

The present invention may be embodied in many other forms without departing from its spirit or essential characteristics. Accordingly, the embodiments of the present invention are to be considered in all respects as merely illustrative and not restrictive.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms.

The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", "having", and the like are intended to specify the presence of stated features, integers, steps, operations, components, Steps, operations, elements, components, or combinations of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and a duplicate description thereof will be omitted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The variable vane pump according to an embodiment of the present invention includes a casing 100, an outer cam ring 200, a rotor 300, and a support spring 700, as shown in FIG.

5, the casing 100 includes a housing 110 that is opened at one side and a cover 120 that closes an opening of the housing 110. The housing 110, The cover 120 may be coupled to each other through a coupling means such as a bolt.

The casing 100 is formed to have a predetermined space therein so that components such as the outer cam ring 200, the rotor 300, and the support spring 700 can be installed therein. The suction port 400 and an exhaust port 500 for discharging the working fluid are formed.

The suction port 400 is formed as a groove formed on one side of a bottom portion of the opposite side of the opening of the housing 110 and a groove portion formed on the inner side surface of the cover 120 in correspondence with the groove portion, The cover 500 may be formed as a groove formed on the other side of the bottom of the opposite side of the opening of the housing 110 and a groove formed in the inner surface of the cover 120 in correspondence with the groove.

The suction port 400 communicates with one side of the rotary chamber RS and is formed in an arcuate shape so that the sectional area gradually decreases along the rotational direction (counterclockwise with reference to FIG. 6).

The discharge port 500 communicates with the other side of the rotary chamber RS and is formed in an arcuate shape so that the cross-sectional area gradually increases along the rotational direction (counterclockwise with reference to FIG. 6).

Therefore, the working fluid can be sucked into the internal space of the casing 100 through the suction port 400 and flow into the rotary chamber RS, and the working fluid introduced into the rotary chamber RS can be supplied to the outer cam Is discharged to the discharge port (500) by the rotor (200) and the rotor (300) and discharged.

6, the outer cam ring 200 is installed inside the casing 100 so as to be rotatable with respect to the pivot axis P, and a rotary chamber RS is formed therein And a rotor 300 and a vane 310 are installed in the rotary chamber RS.

Specifically, the outer cam ring 200 is formed in a substantially ring shape, eccentrically rotates by a predetermined angle with respect to the pivot axis P, and is eccentric by a predetermined amount with respect to a rotor 300 described later, And is formed concentrically with the outer cam ring 200.

A spring support 210 protrudes from one side of the outer cam ring 200 and the spring support 210 contacts the one end of the support spring 700 to support the support spring 700.

The spring support part 210 is formed in a rod shape having a predetermined length and width and transmits the elastic force of the support spring 700 to the outer cam ring 200 so that the outer cam ring 200 and the rotor 300 And serves to compress the support spring 700 when the outer cam ring 200 rotates at a certain angle.

As shown in FIG. 6, the rotor 300 is eccentrically installed with respect to the outer cam ring 200, and rotates in conjunction with rotation of the drive shaft. A plurality of slots 300s are formed on the outer circumference of the rotor 300, The slots 300s are provided with a plurality of vanes 310 that are radially slidably coupled.

Specifically, the rotor 300 is rotatably installed in a rotary chamber RS of the outer cam ring 200, and rotates by receiving a rotational force from a driving shaft of the engine.

The rotor 300 is formed in a circular shape and smaller than the diameter of the rotary chamber RS of the outer cam ring 200 so that the rotor 300 can be rotated inside the rotary chamber RS.

The drive shaft connected to the rotor 300 may be connected to the outside through the cover 120. The drive shaft is configured to be rotatable about an axis, and is eccentric with respect to the outer cam ring 200.

6, when the rotor 300 rotates, the vanes 310 are radially slidably discharged from the slots 300s, and the outer ends of the vanes 310 contact the inner circumferential surface of the outer cam ring 200. As shown in FIG.

The support spring 700 is configured to exert an elastic force such that the outer cam ring 200 is eccentric with respect to the drive shaft, and one end of the support spring 700 is connected to a spring support part (not shown) formed on the outer surface of the outer cam ring 200 710, and the other end of the support spring 700 is installed to contact the inner surface of the rotary chamber RS.

More specifically, the support spring 700 is installed on the inner side of the casing 100, and the outer cam ring 200 and the rotor 300 are eccentric by a predetermined amount by the elastic force of the support spring 700 And the discharge amount of the oil fed to the discharge port 500 varies depending on the degree of eccentricity between the outer cam ring 200 and the rotor 300.

The variable vane pump according to an embodiment of the present invention configured as described above is installed in a port of at least one of the suction port 400 and the discharge port 500, A support rib 600 for supporting a side surface of the vane 310 is formed at the end of the port corresponding to the outer side.

7 and 8, when the vane 310 provided in the slot 300s of the rotor 300 is discharged from the slot 300s, Thereby supporting the side surface of the vane 310.

6, the support ribs 600 may be formed in a part of the suction port 400 and the discharge port 500. As shown in FIG.

Specifically, the supporting rib 600 is formed corresponding to a section where the side contact area of the vane 310 closely contacting the casing 100 or the cover 120 is less than 50% of the total area, .

In other respects, it can be understood that the side surface area of the vane 310 corresponding to the suction port 400 and the discharge port 500 is formed in an interval of 50% or more of the entire lateral surface area of the vane 310 have.

For example, the support rib 600 may extend from the suction port 400 and the discharge port 500 in a wide range starting from a widest portion to a narrow portion, About one-third of the total formed length of the light emitting device.

7, the support rib 600 may be formed in a rectangular shape as shown in FIG. 7, or may be chamfered on one side as shown in FIG. 8, so that the fluid flow inclined portion 610 It may be formed in the shape of a triangle as formed, and may be variously modified as long as it can support the side surface of the vane 310.

In the above description, the variable vane pump having the support ribs for supporting the side surfaces of the vanes at the ends of the ports corresponding to the outer sides of the center of the outer cam ring has been described as an example. However, The same support rib can be applied.

Although the present invention has been described with reference to the preferred embodiments thereof with reference to the accompanying drawings, it will be apparent to those skilled in the art that many other obvious modifications can be made therein without departing from the scope of the invention. Accordingly, the scope of the present invention should be interpreted by the appended claims to cover many such variations.

100: casing
110: Housing
120: cover
200: Outer cam ring
300: Rotor
310: Vane
400: Suction port
500: exhaust port
600: Support rib

Claims

A vane pump configured to discharge the working fluid introduced into one side of the rotary chamber formed between the outer cam ring and the rotor to the other side of the rotary chamber,
A suction port communicating with one side of the rotary chamber for introducing a working fluid into the rotary chamber when the rotor rotates; And
And a discharge port communicating with the other side of the rotary chamber and discharging a working fluid of the rotary chamber when the rotor rotates,
Wherein at least one of the suction port and the discharge port is provided with a support rib for supporting a side surface of the vane at an end portion of the port corresponding to the outer side with respect to the center of the outer cam ring,
And a fluid flow inclined portion is formed on a portion of the support rib opposite to the close contact surface which is in close contact with the side surface of the vane.

The method according to claim 1,
The support rib
Wherein a side surface area of the vane corresponding to the suction port and the discharge port is formed in an interval of 50% or more of an entire lateral surface area of the vane.

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